Linux-libre 4.7.1-gnupck-4.7.1-gnu

1 files changed, 89 insertions, 2 deletions

diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
index b1cd865ad..52c9051f3 100644
--- a/drivers/net/ieee802154/atusb.c
+++ b/drivers/net/ieee802154/atusb.c
@@ -3,6 +3,8 @@
  *
  * Written 2013 by Werner Almesberger <werner@almesberger.net>
  *
+ * Copyright (c) 2015 - 2016 Stefan Schmidt <stefan@datenfreihafen.org>
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation, version 2
@@ -472,6 +474,76 @@ atusb_set_txpower(struct ieee802154_hw *hw, s32 mbm)
 	return -EINVAL;
 }
 
+#define ATUSB_MAX_ED_LEVELS 0xF
+static const s32 atusb_ed_levels[ATUSB_MAX_ED_LEVELS + 1] = {
+	-9100, -8900, -8700, -8500, -8300, -8100, -7900, -7700, -7500, -7300,
+	-7100, -6900, -6700, -6500, -6300, -6100,
+};
+
+static int
+atusb_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca)
+{
+	struct atusb *atusb = hw->priv;
+	u8 val;
+
+	/* mapping 802.15.4 to driver spec */
+	switch (cca->mode) {
+	case NL802154_CCA_ENERGY:
+		val = 1;
+		break;
+	case NL802154_CCA_CARRIER:
+		val = 2;
+		break;
+	case NL802154_CCA_ENERGY_CARRIER:
+		switch (cca->opt) {
+		case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
+			val = 3;
+			break;
+		case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
+			val = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return atusb_write_subreg(atusb, SR_CCA_MODE, val);
+}
+
+static int
+atusb_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
+{
+	struct atusb *atusb = hw->priv;
+	u32 i;
+
+	for (i = 0; i < hw->phy->supported.cca_ed_levels_size; i++) {
+		if (hw->phy->supported.cca_ed_levels[i] == mbm)
+			return atusb_write_subreg(atusb, SR_CCA_ED_THRES, i);
+	}
+
+	return -EINVAL;
+}
+
+static int
+atusb_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, u8 retries)
+{
+	struct atusb *atusb = hw->priv;
+	int ret;
+
+	ret = atusb_write_subreg(atusb, SR_MIN_BE, min_be);
+	if (ret)
+		return ret;
+
+	ret = atusb_write_subreg(atusb, SR_MAX_BE, max_be);
+	if (ret)
+		return ret;
+
+	return atusb_write_subreg(atusb, SR_MAX_CSMA_RETRIES, retries);
+}
+
 static int
 atusb_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on)
 {
@@ -508,6 +580,9 @@ static struct ieee802154_ops atusb_ops = {
 	.stop			= atusb_stop,
 	.set_hw_addr_filt	= atusb_set_hw_addr_filt,
 	.set_txpower		= atusb_set_txpower,
+	.set_cca_mode		= atusb_set_cca_mode,
+	.set_cca_ed_level	= atusb_set_cca_ed_level,
+	.set_csma_params	= atusb_set_csma_params,
 	.set_promiscuous_mode	= atusb_set_promiscuous_mode,
 };
 
@@ -636,9 +711,20 @@ static int atusb_probe(struct usb_interface *interface,
 
 	hw->parent = &usb_dev->dev;
 	hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT |
-		    IEEE802154_HW_PROMISCUOUS;
+		    IEEE802154_HW_PROMISCUOUS | IEEE802154_HW_CSMA_PARAMS;
+
+	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER | WPAN_PHY_FLAG_CCA_ED_LEVEL |
+			 WPAN_PHY_FLAG_CCA_MODE;
+
+	hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) |
+		BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER);
+	hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) |
+		BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR);
+
+	hw->phy->supported.cca_ed_levels = atusb_ed_levels;
+	hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(atusb_ed_levels);
 
-	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER;
+	hw->phy->cca.mode = NL802154_CCA_ENERGY;
 
 	hw->phy->current_page = 0;
 	hw->phy->current_channel = 11;	/* reset default */
@@ -647,6 +733,7 @@ static int atusb_probe(struct usb_interface *interface,
 	hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers);
 	hw->phy->transmit_power = hw->phy->supported.tx_powers[0];
 	ieee802154_random_extended_addr(&hw->phy->perm_extended_addr);
+	hw->phy->cca_ed_level = hw->phy->supported.cca_ed_levels[7];
 
 	atusb_command(atusb, ATUSB_RF_RESET, 0);
 	atusb_get_and_show_chip(atusb);